How much does foundation repair cost?

Most foundation repairs range from $4,000 to $16,000, depending on the extent of the damage and the size of your property.

How long does the repair take?

Most foundation repairs are completed in just 1-2 days using our GeoPoly™ resin injection method.

What is GeoPoly™ resin injection?

GeoPoly™ is a high-strength expanding resin that we inject beneath your foundation. As it expands, it fills voids, compacts loose soil, and lifts your foundation back to level.

Will you need to dig up my yard?

No! We drill small holes (about 16mm diameter) through your slab or beside your footings, inject the resin, and patch the holes. No excavation required.

What does the 20-year warranty cover?

Our 20-year structural warranty covers the repair work we perform. If any issues arise with the repaired area due to workmanship or materials, we'll fix it at no additional cost.

Is the assessment really free?

Yes, 100% free with no obligation. Our structural engineer will inspect your property, explain the issues, and provide recommendations.

How do I know if my cracks are structural or cosmetic?

It's hard to tell from photos alone. That's why we offer a free on-site structural assessment. Our qualified engineers and experienced building professionals will examine the cracks, check for underlying causes, and let you know exactly what's going on.

What causes wall cracks in the first place?

Common causes include reactive clay soils, tree root intrusion, poor drainage, foundation settlement, and seismic activity. During your free assessment, our structural engineer will identify the root cause and design the repair accordingly.

How does HelicalBar™ differ from other crack repair methods?

Traditional methods meant removing bricks, knocking down sections of wall, or excavating foundations and pouring mass concrete — turning your home into a building site for weeks. HelicalBar™ reconnects the wall at depth using stainless-steel bars bonded into the brickwork. It's a permanent engineered solution, not a cosmetic patch — and most repairs are done in 1–2 days.

Will the wall cracks be completely gone?

Yes. Once our team completes the HelicalBar™ repair, the cracks are structurally reconnected and then filled, repointed, or rendered to blend with the surrounding wall. Our technicians take great care to closely match mortar, render, or plaster to the existing finish — in most cases, the repair is barely noticeable.

Is the job done in just 1–2 days?

Most residential wall crack repairs are completed in one to two days, depending on the extent of the damage. Our engineer will confirm the expected timeframe during your free structural assessment.

How much does wall crack repair cost?

Every home is different, so we provide a fixed-price quote after your free structural assessment. There are no hidden costs or surprise charges — the price we quote is the price you pay.

Do I need council approval for the repair?

In most cases, no. HelicalBar™ repairs are classified as maintenance work and don't require a building permit. However, if the damage is linked to structural subsidence, we'll let you know if any approvals are needed.

Can I stay in my home during the repair?

Absolutely. Our repairs are non-invasive and don't require you to vacate. There's no heavy machinery, no knockdown rebuild, and minimal disruption to your daily routine.

Is the 20-year warranty transferable if I sell my home?

Yes. Our 20-year structural warranty is attached to the property, not the owner. If you sell, the warranty transfers to the new owner automatically — giving buyers extra confidence.

What if the cracks come back after the repair?

That's exactly what the 20-year warranty covers. If any repaired structural crack reappears within the warranty period, we'll return and fix it at no cost to you.

What if my cracks are caused by foundation movement?

Some wall cracks are caused by the foundation settling or shifting — not the walls themselves. During your free structural assessment, our engineers will identify the root cause. If foundation work is needed, we use GeoPoly™ — a resin injected beneath your foundations to stabilise and re-level, with no excavation and no mass concrete. Your engineer will point you to the right solution.

Worried About Wall Cracks?

Find the cause, fix the cracks structurally, and give your walls a good-as-new finish — guaranteed for 20 years.

Free quote · 1–2 day repair · 20-year warranty
Structural Engineers · Licensed Builders · Skilled Technicians

Worried About Cracks in Your Walls?

Find the cause, fix the cracks structurally, and give your walls a good-as-new finish — guaranteed for 20 years.

Free structural assessment with a fixed-price quote
Most repairs completed in just 1–2 days — no walls knocked down
Backed by a 20-year structural warranty

Qualified Engineers · Licensed Builders

15,000+Homes Repaired

20-YearStructural Warranty

1–2 DaysMost Repairs

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Engineered to repair your home structurally.

Non-Invasive. Cost-Effective. Guaranteed.

No Walls Knocked Down—Ever.

If you've been told the only permanent fix is knocking out bricks and rebuilding sections of wall — or even worse, knocking the wall down and starting from scratch — that takes weeks, costs thousands, and turns your home into a building site. There's a smarter way that saves you hassle and thousands of dollars.

Narrow slots are cut into the mortar, stainless-steel HelicalBars™ bonded into the brickwork, and grouted in place. That's it. No walls knocked down, no costs — just a permanent structural repair.

The whole job typically takes a day or two. When we're done, we fill the cracks, repoint the mortar, and finish so you'd barely know we were there. Works on any masonry wall — brick, render, or plaster, inside or out.

Want to know exactly what your home needs? Get in touch for a free, no-obligation structural assessment.

What to expect

A step-by-step guide of how the process works — from assessment to completion.

Buildfix structural engineer assessing cracked wall with tablet

Step 1

Free Structural Assessment

Our structural engineers assess the cracked areas, identify the root cause, and design a tailored repair. Repair details — with photos, markings, and measurements — are created on-site using our mobile software, and the price can usually be explained there and then, so you know exactly where you stand.

Buildfix quote package showing structural repair detail, quote cover page, and repair method statement

Step 2

Get Quote and Book

You receive a complete quote package including detailed drawings, repair method statements, and a fixed-price quote — so you’ll know exactly what it’s going to cost. When you’re ready, book through our online portal (takes about 5 minutes) and we’ll organise suitable dates for the work.

Buildfix technicians installing HelicalBars in brick wall

Step 3

Fixing Your Wall Cracks

On the scheduled day, our technicians arrive and get straight to work — marking out the wall, cutting neat slots into the mortar joints, and bonding HelicalBars™ into the brickwork with high-strength structural grout. The result: a reconnected, reinforced wall right where it’s needed most.

Step 4

Final Touches & Clean-Up

Once the HelicalBars™ are installed, the finishing begins. Mortar is repointed, cracks filled, and brickwork colour-matched — or render and plaster blended for a smooth, uniform finish. Then the site is cleaned up and your home left spotless.

Buildfix 20-year structural warranty badge

Step 5

Receive Your Warranty

A few days after sign-off, you’ll receive your Completion Package — a full report covering the work carried out, materials used, and images from the process. It includes your invoice with links to pay through our portal, and your 20-year warranty documentation. That’s your peace of mind, in writing.

See the difference

Actual HelicalBar™ projects where cracked walls are left in near perfect condition.

Rendered exterior wall crack repair before and after

Interior plaster wall crack repair before and after

Interior plaster wall crack before and after repair

Cracked brick arch before and after repair

Cracked plaster wall before and after repair

Structural fix.
Guaranteed to last.

The benefits of a HelicalBar™ wall crack repair.

HelicalBars™ are bonded into the brickwork with high-strength structural grout, reconnecting the cracked masonry at depth. This isn’t filler or repointing — it’s a permanent engineered repair that reinforces the wall so it works as one piece again.

Cross-section showing HelicalBar reinforcement inserted into cracked brick wall mortar joints

Real homes. Real results

See how we’ve helped homeowners fix their wall cracks.

Why choose Buildfix?

Buildfix brings qualified engineers, licensed builders, skilled trades, and the manufacturer together under one roof. One team accountable for every step — from assessment to final sign-off. For nearly 15 years, we've been delivering non-invasive structural repairs — saving homeowners the hassle and costs of traditional methods. What used to take weeks now takes just 1 to 2 days.

Here’s why homeowners choose us

20-year structural warranty: Every repair is backed by a 20-year warranty — transferable if you sell your home.

Under one roof: We assess, design, repair, and manufacture — no need to deal with multiple contractors, because we handle it start to finish.

Fixed pricing, honest advice: No surprises, no tricks — just one fixed price from the start that never changes.

Non-invasive technology: Every method we use is non-invasive — less mess, less stress, and most repairs done in 1 to 2 days.

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Questions?

Our team is here to answer any questions you may have Monday – Friday 8am to 4pm AEST. Give us a call on 1300 854 115.

Worried About Wall Cracks?

Worried About Cracks in Your Walls?

Don't take our word for it

Engineered to repair your home structurally.